Home / 748,870.80-1,123,306.20-660,297.30

Finding the Fourth Proportional to 748,870.80, 1,123,306.20 and 660,297.30

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Solution

The fourth proportional to 748,870.80, 1,123,306.20 and 660,297.30 is: 990,445.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,870.80 : 1,123,306.20 = 660,297.30 : x
  2. Step 2: Convert to fraction form
    748,870.80/1,123,306.20 = 660,297.30/x
  3. Step 3: Cross multiply
    748,870.80x = 1,123,306.20 × 660,297.30
  4. Step 4: Simplify right side
    748,870.80x = 741,716,050,933.26
  5. Step 5: Solve for x
    x = 741,716,050,933.26/748,870.80
  6. Step 6: Final answer
    x = 990,445.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.